Yes, if libjitterentropy is updated, rng-tools must be modified, otherwise 
do_compile errors will occur

  --
Best Regards
---------------------------------------------------
Wang Mingyu
Development Dept.I
Nanjing Fujitsu Nanda Software Tech. Co., Ltd.(FNST) No. 6 Wenzhu Road, 
Nanjing, 210012, China
TEL: +86+25-86630566-8568
COINS: 79988548
FAX: +86+25-83317685
MAIL: [email protected]
http://www.fujitsu.com/cn/fnst/

> -----Original Message-----
> From: Alexander Kanavin <[email protected]>
> Sent: Wednesday, March 23, 2022 5:02 PM
> To: Wang, Mingyu/王 鸣瑜 <[email protected]>; OE-core
> <[email protected]>
> Subject: Re: [OE-core] [PATCH] rng-tools: enable macro
> JENT_CONF_ENABLE_INTERNAL_TIMER
> 
> Please keep the replies on the mailing list. This patch should probably be
> merged with the libjitterentropy update?
> 
> Alex
> 
> 
> On Wed, 23 Mar 2022 at 09:55, [email protected]
> <[email protected]> wrote:
> >
> > After libjitterentropy is updated to 3.4, a macro
> JENT_CONF_ENABLE_INTERNAL_TIMER is added to jitterentropy.h used to
> control struct jent_notime_ct.
> > rng-tools needs this struct, so it's need to make this macro enable.
> >
> >   --
> > Best Regards
> > ---------------------------------------------------
> > Wang Mingyu
> > Development Dept.I
> > Nanjing Fujitsu Nanda Software Tech. Co., Ltd.(FNST) No. 6 Wenzhu
> > Road, Nanjing, 210012, China
> > TEL: +86+25-86630566-8568
> > COINS: 79988548
> > FAX: +86+25-83317685
> > MAIL: [email protected]
> > http://www.fujitsu.com/cn/fnst/
> >
> > > -----Original Message-----
> > > From: Alexander Kanavin <[email protected]>
> > > Sent: Wednesday, March 23, 2022 4:40 PM
> > > To: Wang, Mingyu/王 鸣瑜 <[email protected]>
> > > Cc: OE-core <[email protected]>
> > > Subject: Re: [OE-core] [PATCH] rng-tools: enable macro
> > > JENT_CONF_ENABLE_INTERNAL_TIMER
> > >
> > > This error is not seen on the autobuilder, can you please check why
> > > it occurs only in your local setup? The macro probably needs to be
> > > enabled in a more targeted way.
> > >
> > > Alex
> > >
> > > On Wed, 23 Mar 2022 at 09:02, wangmy <[email protected]> wrote:
> > > >
> > > > do_compile error :
> > > > | ../git/rngd_jitter.c: In function 'rngd_notime_start':
> > > > | ../git/rngd_jitter.c:56:45: error: invalid use of undefined type
> > > > | 'struct
> > > jent_notime_ctx'
> > > > |    56 |         ret =
> > > -pthread_attr_init(&thread_ctx->notime_pthread_attr);
> > > >
> > > > enable macro JENT_CONF_ENABLE_INTERNAL_TIMER to use struct
> > > > jent_notime_ctx
> > > >
> > > > Signed-off-by: Wang Mingyu <[email protected]>
> > > > ---
> > > >  meta/recipes-support/rng-tools/rng-tools_6.15.bb | 2 ++
> > > >  1 file changed, 2 insertions(+)
> > > >
> > > > diff --git a/meta/recipes-support/rng-tools/rng-tools_6.15.bb
> > > > b/meta/recipes-support/rng-tools/rng-tools_6.15.bb
> > > > index ae974f9f6f..0696351903 100644
> > > > --- a/meta/recipes-support/rng-tools/rng-tools_6.15.bb
> > > > +++ b/meta/recipes-support/rng-tools/rng-tools_6.15.bb
> > > > @@ -34,6 +34,8 @@ INITSCRIPT_PARAMS = "start 03 2 3 4 5 . stop 30
> > > > 0 6
> > > 1 ."
> > > >
> > > >  SYSTEMD_SERVICE:${PN} = "rngd.service"
> > > >
> > > > +CFLAGS += " -DJENT_CONF_ENABLE_INTERNAL_TIMER "
> > > > +
> > > >  # Refer autogen.sh in rng-tools
> > > >  do_configure:prepend() {
> > > >      cp ${S}/README.md ${S}/README
> > > > --
> > > > 2.25.1
> > > >
> > > >
> > > > 
> > > >
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